Simulation study determines optimum turboexpander process for NGL recovery

Simulation of NGL recovery from natural gas streams of wide compositions and for different turboexpander process configurations has revealed that the gas-liquid subcooled process (GLSP) yielded an overall average ethane recovery of about 80% and, in the case of a location with variable feed compositions, GLSP would yield the highest average ethane recovery.The study also showed that the gas-subcooled process (GSP) exhibited the highest C2 recovery for medium composition of C2+. The study also showed that the relative amount of heavy component in the feed stream determines which cryogenic process configuration should be chosen.The other two processes tested were a Basic process and a liqui...

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